Simplified tectonic map of the Pyrenees showing the main tectonic units and the location of (i) the North Pyrenean basement massifs and (ii) the plutons/gneiss domes in the Axial Zone that are mentioned in the text (Choukroune and ECORS-Pyrenees Team, 1989; Roure et al., 1989). NPFT = North Pyrenean Frontal Thrust; NPZ = North Pyrenean Zone; NPF = North Pyrenean Fault; SPFT = South Pyrenean Fault. (i) L-U = Labourd-Ursuya; Ar = Arize; TS = Trois-Seigneurs; Ag = Agly; Sa = Salvezines. (ii) Bet = Bethmale; Rt = Riberot; Mna = Marimaña; Mda = Maladeta; Ba = Barruera; Bo = Bono. Modified after Ternois et al. (2019a).